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Home >> GMC >> 2007 >> Acadia SLT, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 601 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B1025-B1095 >> Circuit/System Testing >> With Amplifier

With Amplifier

WARNING: This page is about a different car, the 2008 Saturn Outlook, 2008 GMC Acadia, and 2008 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
  1. With the scan tool, verify the DTC is set by the radio.
  2. Disconnect the suspect audio amplifier harness connector.
  3. Disconnect the radio harness connector.
  4. Test for less than 1 volt on both of the suspect low level audio signal circuits.
    • If greater than 1 volt repair short to voltage.
  5. Test for infinite resistance between both low level audio signal circuits and ground.
    • If less than specified value, repair short to ground.
  6. Test for less than 1 ohm between the suspect low level audio signal circuits amplifier harness connector and the suspect speaker harness connector.
    • If greater than specified value repair open or high resistance.